mirror of
https://gitlab.freedesktop.org/gstreamer/gstreamer.git
synced 2024-11-09 19:09:41 +00:00
bcb8068e27
They are very confusing for people, and more often than not also just not very accurate. Seeing 'last reviewed: 2005' in your docs is not very confidence-inspiring. Let's just remove those comments.
137 lines
3.4 KiB
C
137 lines
3.4 KiB
C
/* GStreamer
|
|
* Copyright (C) <2012> Wim Taymans <wim.taymans@gmail.com>
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Library General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Library General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Library General Public
|
|
* License along with this library; if not, write to the
|
|
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
* Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
/**
|
|
* SECTION:gstrtpexthdr
|
|
* @short_description: Helper methods for dealing with RTP header extensions
|
|
* @see_also: #GstRTPBasePayload, #GstRTPBaseDepayload, gstrtpbuffer
|
|
*
|
|
* <refsect2>
|
|
* <para>
|
|
* </para>
|
|
* </refsect2>
|
|
*/
|
|
|
|
#include "gstrtphdrext.h"
|
|
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
/**
|
|
* gst_rtp_hdrext_set_ntp_64:
|
|
* @data: the data to write to
|
|
* @size: the size of @data
|
|
* @ntptime: the NTP time
|
|
*
|
|
* Writes the NTP time in @ntptime to the format required for the NTP-64 header
|
|
* extension. @data must hold at least #GST_RTP_HDREXT_NTP_64_SIZE bytes.
|
|
*
|
|
* Returns: %TRUE on success.
|
|
*/
|
|
gboolean
|
|
gst_rtp_hdrext_set_ntp_64 (gpointer data, guint size, guint64 ntptime)
|
|
{
|
|
g_return_val_if_fail (data != NULL, FALSE);
|
|
g_return_val_if_fail (size >= GST_RTP_HDREXT_NTP_64_SIZE, FALSE);
|
|
|
|
GST_WRITE_UINT64_BE (data, ntptime);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* gst_rtp_hdrext_get_ntp_64:
|
|
* @data: the data to read from
|
|
* @size: the size of @data
|
|
* @ntptime: the result NTP time
|
|
*
|
|
* Reads the NTP time from the @size NTP-64 extension bytes in @data and store the
|
|
* result in @ntptime.
|
|
*
|
|
* Returns: %TRUE on success.
|
|
*/
|
|
gboolean
|
|
gst_rtp_hdrext_get_ntp_64 (gpointer data, guint size, guint64 * ntptime)
|
|
{
|
|
g_return_val_if_fail (data != NULL, FALSE);
|
|
g_return_val_if_fail (size >= GST_RTP_HDREXT_NTP_64_SIZE, FALSE);
|
|
|
|
if (ntptime)
|
|
*ntptime = GST_READ_UINT64_BE (data);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* gst_rtp_hdrext_set_ntp_56:
|
|
* @data: the data to write to
|
|
* @size: the size of @data
|
|
* @ntptime: the NTP time
|
|
*
|
|
* Writes the NTP time in @ntptime to the format required for the NTP-56 header
|
|
* extension. @data must hold at least #GST_RTP_HDREXT_NTP_56_SIZE bytes.
|
|
*
|
|
* Returns: %TRUE on success.
|
|
*/
|
|
gboolean
|
|
gst_rtp_hdrext_set_ntp_56 (gpointer data, guint size, guint64 ntptime)
|
|
{
|
|
guint8 *d = data;
|
|
gint i;
|
|
|
|
g_return_val_if_fail (data != NULL, FALSE);
|
|
g_return_val_if_fail (size >= GST_RTP_HDREXT_NTP_56_SIZE, FALSE);
|
|
|
|
for (i = 0; i < 7; i++) {
|
|
d[6 - i] = ntptime & 0xff;
|
|
ntptime >>= 8;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* gst_rtp_hdrext_get_ntp_56:
|
|
* @data: the data to read from
|
|
* @size: the size of @data
|
|
* @ntptime: the result NTP time
|
|
*
|
|
* Reads the NTP time from the @size NTP-56 extension bytes in @data and store the
|
|
* result in @ntptime.
|
|
*
|
|
* Returns: %TRUE on success.
|
|
*/
|
|
gboolean
|
|
gst_rtp_hdrext_get_ntp_56 (gpointer data, guint size, guint64 * ntptime)
|
|
{
|
|
guint8 *d = data;
|
|
|
|
g_return_val_if_fail (data != NULL, FALSE);
|
|
g_return_val_if_fail (size >= GST_RTP_HDREXT_NTP_56_SIZE, FALSE);
|
|
|
|
if (ntptime) {
|
|
gint i;
|
|
|
|
*ntptime = 0;
|
|
for (i = 0; i < 7; i++) {
|
|
*ntptime <<= 8;
|
|
*ntptime |= d[i];
|
|
}
|
|
}
|
|
return TRUE;
|
|
}
|